【仮想環境】Centos7にZabbix3をインストールする

監視ソフトといえば「Zabbix」が有名ですね。
監視ソフトはけっこう種類があり、NagiosやHinemosなど
それぞれに派閥（）があるような印象です。
怖い怖い

そういった比較とかは今度気が向いたらするとして、
今回はVagrantを使ってCentos7にZabbix3をインストールしましょう。

どこの派閥でもないならなぜZabbixかって？
理由は簡単。

Zabbixは一番多機能。これは間違いない。たぶん（笑）
インストールも順序良くやれば、かなり簡単。
インストール後、遊ぶ幅が広い多機能だからね。

インストールして、簡単な設定が終わったあと
ドキュメントでも見ながら自分で色々いじくれると楽しいでしょ？

準備

前提環境

Vagrant
VirtualBox
ターミナル*WindowsならCygwinとか

Cygwinのインストール方法については
また別の記事でまとめます。

インストールするもの

Zabbix3

ちょっと前だとZabbix2系が多く利用されていましたが
Zabbix3を利用したほうがいいです。

ダッシュボードやシナリオなども
見やすくなっていると思います。

Zabbixとは？

Zabbixとは、オープンソースの統合監視ソフトウェアです。
ラトビアのZabbix社により開発が行われており、日本にも2012年から支社があります。
SNMP監視やエージェントレスといったシンプルな監視機能に加え、
Zabbix Agentを導入することによる高機能な監視の実現が可能になっています。

インストールする

まずはVagrantを使ってさっさっと仮想環境を作りましょう。

$ vagrant init

1	$ vagrant init

もしかしてすでに別の仮想マシンを作っている方を考慮して
Vagrantfileをちょっといじっておきます。

# -*- mode: ruby -*-
# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
# 仮想マシンのホスト名
HOST_NAME = "test-zabbix"
# VirtualBoxマネージャ上の仮想マシン名
MACHINE_NAME = HOST_NAME

Vagrant.configure(2) do |config|
  # The most common configuration options are documented and commented below.
  # For a complete reference, please see the online documentation at
  # https://docs.vagrantup.com.

  # Every Vagrant development environment requires a box. You can search for
  # boxes at https://atlas.hashicorp.com/search.
  config.vm.box = "CentOS7.0"

  config.vm.host_name = MACHINE_NAME
  config.vm.provider :virtualbox do |virtualbox|
    virtualbox.name = MACHINE_NAME
  end

  # Disable automatic box update checking. If you disable this, then
  # boxes will only be checked for updates when the user runs
  # `vagrant box outdated`. This is not recommended.
  # config.vm.box_check_update = false

  # Create a forwarded port mapping which allows access to a specific port
  # within the machine from a port on the host machine. In the example below,
  # accessing "localhost:8080" will access port 80 on the guest machine.
  config.vm.network "forwarded_port", guest: 80, host: 8080
  config.vm.network "forwarded_port", guest: 22, host: 2023, id: "ssh"
  config.vm.network "forwarded_port", guest: 3000, host: 3123

  # Create a private network, which allows host-only access to the machine
  # using a specific IP.
  #config.vm.network "private_network", ip: "192.168.33.8"

  # Create a public network, which generally matched to bridged network.
  # Bridged networks make the machine appear as another physical device on
  # your network.
  # config.vm.network "public_network"

  # Share an additional folder to the guest VM. The first argument is
  # the path on the host to the actual folder. The second argument is
  # the path on the guest to mount the folder. And the optional third
  # argument is a set of non-required options.
  # config.vm.synced_folder "../data", "/vagrant_data"
  config.vm.synced_folder "../zabbix", "/vagrant"

  # Provider-specific configuration so you can fine-tune various
  # backing providers for Vagrant. These expose provider-specific options.
  # Example for VirtualBox:
  #
  # config.vm.provider "virtualbox" do |vb|
  #   # Display the VirtualBox GUI when booting the machine
  #   vb.gui = true
  #
  #   # Customize the amount of memory on the VM:
  #   vb.memory = "1024"
  # end
  #
  # View the documentation for the provider you are using for more
  # information on available options.

  # Define a Vagrant Push strategy for pushing to Atlas. Other push strategies
  # such as FTP and Heroku are also available. See the documentation at
  # https://docs.vagrantup.com/v2/push/atlas.html for more information.
  # config.push.define "atlas" do |push|
  #   push.app = "YOUR_ATLAS_USERNAME/YOUR_APPLICATION_NAME"
  # end

  # Enable provisioning with a shell script. Additional provisioners such as
  # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
  # documentation for more information about their specific syntax and use.
  # config.vm.provision "shell", inline: <<-SHELL
  #   sudo apt-get update
  #   sudo apt-get install -y apache2
  # SHELL
end

# -*- mode: ruby -*-

# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure

# configures the configuration version (we support older styles for

# backwards compatibility). Please don't change it unless you know what

# you're doing.

# 仮想マシンのホスト名

HOST_NAME = "test-zabbix"

# VirtualBoxマネージャ上の仮想マシン名

MACHINE_NAME = HOST_NAME

Vagrant.configure(2) do |config|

# The most common configuration options are documented and commented below.

# For a complete reference, please see the online documentation at

# https://docs.vagrantup.com.

# Every Vagrant development environment requires a box. You can search for

# boxes at https://atlas.hashicorp.com/search.

config.vm.box = "CentOS7.0"

config.vm.host_name = MACHINE_NAME

config.vm.provider :virtualbox do |virtualbox|

virtualbox.name = MACHINE_NAME

end

# Disable automatic box update checking. If you disable this, then

# boxes will only be checked for updates when the user runs

# `vagrant box outdated`. This is not recommended.

# config.vm.box_check_update = false

# Create a forwarded port mapping which allows access to a specific port

# within the machine from a port on the host machine. In the example below,

# accessing "localhost:8080" will access port 80 on the guest machine.

config.vm.network "forwarded_port", guest: 80, host: 8080

config.vm.network "forwarded_port", guest: 22, host: 2023, id: "ssh"

config.vm.network "forwarded_port", guest: 3000, host: 3123

# Create a private network, which allows host-only access to the machine

# using a specific IP.

#config.vm.network "private_network", ip: "192.168.33.8"

# Create a public network, which generally matched to bridged network.

# Bridged networks make the machine appear as another physical device on

# your network.

# config.vm.network "public_network"

# Share an additional folder to the guest VM. The first argument is

# the path on the host to the actual folder. The second argument is

# the path on the guest to mount the folder. And the optional third

# argument is a set of non-required options.

# config.vm.synced_folder "../data", "/vagrant_data"

config.vm.synced_folder "../zabbix", "/vagrant"

# Provider-specific configuration so you can fine-tune various

# backing providers for Vagrant. These expose provider-specific options.

# Example for VirtualBox:

# config.vm.provider "virtualbox" do |vb|

# # Display the VirtualBox GUI when booting the machine

# vb.gui = true

# # Customize the amount of memory on the VM:

# vb.memory = "1024"

# end

# View the documentation for the provider you are using for more

# information on available options.

# Define a Vagrant Push strategy for pushing to Atlas. Other push strategies

# such as FTP and Heroku are also available. See the documentation at

# https://docs.vagrantup.com/v2/push/atlas.html for more information.

# config.push.define "atlas" do |push|

# push.app = "YOUR_ATLAS_USERNAME/YOUR_APPLICATION_NAME"

# end

# Enable provisioning with a shell script. Additional provisioners such as

# Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the

# documentation for more information about their specific syntax and use.

# config.vm.provision "shell", inline: <<-SHELL

# sudo apt-get update

# sudo apt-get install -y apache2

# SHELL

end

ホスト側でポートなどをぶつからないようにいじったら
Vagrantを起動します

$ vagrant up

1	$ vagrant up

起動したらsshでログインします。

$ vagrant ssh

1	$ vagrant ssh

仮想マシン内に入ったら
とりあえずyumでアップデートしておきましょう。

$ sudo yum uodate

1	$ sudo yum uodate

前回の記事でも書いたけどCentos7は自分のパソコンから
ブラウザにアクセスできないので、ファイヤーウォールを無効にしておきます。

Vagratnt+Centos7+Rails4でブラウザにアクセス出来ない時にやったこと

ちょっと試してみたいソフトウェアがあったから Vagrantを使って仮想環境を作ったんだけど丸２日ぐらい途方に暮れたからその時やったことを書き溜めとく。そもそもサーバー立ってる？まず真っ先にサーバーが起動してない...

omohikane.com

2016-08-31 17:36

$ sudo systemctl stop firewalld

1	$ sudo systemctl stop firewalld

それでは順を追ってZabbixのインストールをしていきます。
公式サイトを見れば全部書いてあるけどね。

Zabbix LLCのリポジトリ登録をします。

$ sudo yum install http://repo.zabbix.com/zabbix/3.0/rhel/7/x86_64/zabbix-release-3.0-1.el7.noarch.rpm

1	$ sudo yum install http://repo.zabbix.com/zabbix/3.0/rhel/7/x86_64/zabbix-release-3.0-1.el7.noarch.rpm

Zabbix関連のパッケージをインストールしていきます。

$ sudo yum install zabbix-server-mysql zabbix-web-mysql zabbix-web-japanese zabbix-agent mariadb-server

1	$ sudo yum install zabbix-server-mysql zabbix-web-mysql zabbix-web-japanese zabbix-agent mariadb-server

Zabbixのログとかを保存する
MariaDB用の設定をします

$ sudo vim /etc/my.cnf.d/server.cnf

1	$ sudo vim /etc/my.cnf.d/server.cnf

#
# These groups are read by MariaDB server.
# Use it for options that only the server (but not clients) should see
#
# See the examples of server my.cnf files in /usr/share/mysql/
#

# this is read by the standalone daemon and embedded servers
[server]

# this is only for the mysqld standalone daemon
[mysqld]
#ここから下
character-set-server = utf8
collation-server     = utf8_bin
skip-character-set-client-handshake
innodb_file_per_table
#ここから上
# this is only for embedded server
[embedded]

# This group is only read by MariaDB-5.5 servers.
# If you use the same .cnf file for MariaDB of different versions,
# use this group for options that older servers don't understand
[mysqld-5.5]

# These two groups are only read by MariaDB servers, not by MySQL.
# If you use the same .cnf file for MySQL and MariaDB,
# you can put MariaDB-only options here
[mariadb]

[mariadb-5.5]

# These groups are read by MariaDB server.

# Use it for options that only the server (but not clients) should see

# See the examples of server my.cnf files in /usr/share/mysql/

# this is read by the standalone daemon and embedded servers

[server]

# this is only for the mysqld standalone daemon

[mysqld]

#ここから下

character-set-server = utf8

collation-server = utf8_bin

skip-character-set-client-handshake

innodb_file_per_table

#ここから上

# this is only for embedded server

[embedded]

# This group is only read by MariaDB-5.5 servers.

# If you use the same .cnf file for MariaDB of different versions,

# use this group for options that older servers don't understand

[mysqld-5.5]

# These two groups are only read by MariaDB servers, not by MySQL.

# If you use the same .cnf file for MySQL and MariaDB,

# you can put MariaDB-only options here

[mariadb]

[mariadb-5.5]

上のように編集したらデータベースの起動と自動起動の設定をします。

$ sudo systemctl start mariadb
$ sudo systemctl enable mariadb

1 2	$ sudo systemctl start mariadb $ sudo systemctl enable mariadb

データベースの初期設定と、初期データの投入をします。
このとき"password"は任意で構いませんが、
必ず覚えておいてください。

$ mysql -uroot
MariaDB [(none)]> create database zabbix;
MariaDB [(none)]> grant all privileges on zabbix.* to zabbix@localhost identified by 'password' ;
MariaDB [(none)]> exit
$ zcat /usr/share/doc/zabbix-server-mysql-3.0.4/create.sql.gz | mysql -uroot zabbix

$ mysql -uroot

MariaDB [(none)]> create database zabbix;

MariaDB [(none)]> grant all privileges on zabbix.* to zabbix@localhost identified by 'password' ;

MariaDB [(none)]> exit

$ zcat /usr/share/doc/zabbix-server-mysql-3.0.4/create.sql.gz | mysql -uroot zabbix

Zabbixサーバーで使用するDBを設定ファイルに記入します。

$ sudo vim /etc/zabbix/zabbix_server.conf

1	$ sudo vim /etc/zabbix/zabbix_server.conf

109行目あたりからのDBPasswordに
先ほどMariaDBで設定した"password"を記入してください。

### Option: DBPassword
#       Database password. Ignored for SQLite.
#       Comment this line if no password is used.
#
# Mandatory: no
# Default:

DBPassword=password #←これを記入すれば最低限動作します。

### Option: DBPassword

# Database password. Ignored for SQLite.

# Comment this line if no password is used.

# Mandatory: no

# Default:

DBPassword=password #←これを記入すれば最低限動作します。

次にWebインターフェースの時間帯を設定します。

$ sudo vim /etc/httpd/conf.d/zabbix.conf

1	$ sudo vim /etc/httpd/conf.d/zabbix.conf

#
# Zabbix monitoring system php web frontend
#

Alias /zabbix /usr/share/zabbix

<Directory "/usr/share/zabbix">
    Options FollowSymLinks
    AllowOverride None
    Require all granted

    <IfModule mod_php5.c>
        php_value max_execution_time 300
        php_value memory_limit 128M
        php_value post_max_size 16M
        php_value upload_max_filesize 2M
        php_value max_input_time 300
        php_value always_populate_raw_post_data -1
        # php_value date.timezone Europe/Riga
        php_value date.timezone Asia/Tokyo #←Asia/Tokyoに変更
    </IfModule>
</Directory>

# Zabbix monitoring system php web frontend

Alias /zabbix /usr/share/zabbix

Options FollowSymLinks

AllowOverride None

Require all granted

php_value max_execution_time 300

php_value memory_limit 128M

php_value post_max_size 16M

php_value upload_max_filesize 2M

php_value max_input_time 300

php_value always_populate_raw_post_data -1

# php_value date.timezone Europe/Riga

php_value date.timezone Asia/Tokyo #←Asia/Tokyoに変更

</IfModule>

</Directory>

いよっしゃー！！
あとはデーモンを起動するだけです！！(+ 自動起動も)

$ sudo systemctl start zabbix-server zabbix-agent httpd
$ systemctl enable zabbix-server zabbix-agent httpd

1 2	$ sudo systemctl start zabbix-server zabbix-agent httpd $ systemctl enable zabbix-server zabbix-agent httpd

ではZabbixをブラウザで開いてみましょう！！

http://localhost/zabbix/
(http://IPアドレス/zabbix/)

英語の設定画面が出ますが気にせず「next step」を押していってください。
Configure DB connection
のpasswordにはMariaDBのパスワードを入力してください。

あとはクリックしていけば設定は終わりログイン画面に行きます。

Username：Admin
Password：zabbix

でログイン可能です。

やったーー！！
やっぱり簡単だねこれ。

あとはいじいじしてみてね

じゃあね～